Golang 이미지 조작: 이미지의 그라데이션 및 텍스처 매핑을 수행하는 방법

package main import ( "image" "image/color" "image/png" "os" ) // 渐变图片函数 func createGradient(width, height int) *image.RGBA { img := image.NewRGBA(image.Rect(0, 0, width, height)) // 渐变色起始颜色和结束颜色 startColor := color.RGBA{255, 0, 0, 255} // 红色 endColor := color.RGBA{0, 0, 255, 255} // 蓝色 // 计算每个像素的颜色并设置到图片上 for y := 0; y < height; y++ { for x := 0; x < width; x++ { percent := float64(x) / float64(width-1) r := uint8(float64(startColor.R)*(1-percent) + float64(endColor.R)*percent) g := uint8(float64(startColor.G)*(1-percent) + float64(endColor.G)*percent) b := uint8(float64(startColor.B)*(1-percent) + float64(endColor.B)*percent) img.SetRGBA(x, y, color.RGBA{r, g, b, 255}) } } return img } func main() { width, height := 640, 480 img := createGradient(width, height) // 保存图片 file, _ := os.Create("gradient.png") defer file.Close() png.Encode(file, img) }

package main import ( "image" "image/color" "image/draw" "image/png" "os" ) // 纹理映射函数 func applyTexture(targetImg draw.Image, textureImg image.Image, offsetX, offsetY int) { bounds := targetImg.Bounds() textureBounds := textureImg.Bounds() // 遍历目标图像的每个像素点，并根据纹理图像的坐标系获取对应的颜色值 for y := bounds.Min.Y; y < bounds.Max.Y; y++ { for x := bounds.Min.X; x < bounds.Max.X; x++ { textureX := (x-offsetX)%textureBounds.Dx() textureY := (y-offsetY)%textureBounds.Dy() textureColor := textureImg.At(textureX, textureY) targetImg.Set(x, y, textureColor) } } } func main() { targetImgFile, _ := os.Open("target.png") // 目标图像文件 targetImg, _ := png.Decode(targetImgFile) textureImgFile, _ := os.Open("texture.png") // 纹理图像文件 textureImg, _ := png.Decode(textureImgFile) offsetX, offsetY := 100, 100 // 纹理映射的偏移值 // 创建一个新的图像作为结果 resultImg := image.NewRGBA(targetImg.Bounds()) draw.Draw(resultImg, resultImg.Bounds(), targetImg, image.ZP, draw.Src) // 应用纹理映射 applyTexture(resultImg, textureImg, offsetX, offsetY) // 保存结果图像 resultFile, _ := os.Create("result.png") defer resultFile.Close() png.Encode(resultFile, resultImg) }